What Do You Understand by the Term Current? State and Define Its S.I. Unit.

What do you understand by the term current? State and define its S.I. unit.

Short/Brief Note

Current is the rate of flow of charge across a cross-section. It is a scalar quantity.

Its S.I. unit is ampere (coulomb per second).

If 1 ampere current flows through a conductor, it means that 6.25 x 10¹⁸ electrons pass in 1 second across that cross-section of conductor.

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Direction of the Electric Current - Conventional and Electronic Flow

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Chapter 9: Current Electricity - Exercise 9 (A) [Page 193]

Chapter 9 Current Electricity
Exercise 9 (A) | Q 10 | Page 193

Distinguish between D.C. and A.C.

What is the number of electrons that would flow per second through the cross-section of a wire when 1 A current flows in it?

True or False – If False give the correct answer

Electron flow is in the same direction to conventional current flow.

State whether true or false. If false, correct the statement.

The anode in electrolyte is negative.

Problems for practice:

If 50 coulomb of electric charge flows through a wire in five minutes, calculate the current in the wire?